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2 years ago

7

Alaina bought 2 cokes and 3 hot dogs for $5.25. Jonathan bought 1 coke and 5 hot dogs for $5.25. Write a system of equations tha

t models the situation

1 answer:

Sidana [21]2 years ago

5 0

Answer:2x+3y=5.25

x+5y=5.25

Step-by-step explanation:

let x equal cokes and y equal hot dogs

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12x - 32 - 2x + 68<br> None of the answers match

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3 years ago

2. In a barnyard, there is an assortment of chickens and cows. Counting heads, one gets 80; counting legs, one gets 184. How man

Anvisha [2.4K]

Answer:

68 chickens and 12 cows.

Step-by-step explanation:

Let x represents the number of chicken and y represents the number of cows in the barnyard,

Given,

Total heads = 80

⇒ x + y = 80 ------(1),

Also, total legs = 184,

Since, a chicken has two legs and cow has 4 legs,

⇒ 2x + 4y = 184 -----(2),

Equation (2) - 2 × equation (1),

We get,

4y - 2y = 184 - 160

2y = 24

y = 12

From equation (1),

x + 12 = 80 ⇒ x = 80 - 12 = 68

Hence, the number of chicken = 68,

And, the number of cows = 12

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3 years ago

Apples cost $3.60 for 3 lb. At that rate, how many pounds of apples can you buy for $8.40?

irinina [24]

Apples cost $3.60 for 3 pounds . The rate can be calculated as follows

$\begin{gathered} 3\text{ pounds = \$3.60} \\ 1\text{ pounds = ?} \\ \text{rate = }\frac{3.60}{3} \\ \text{rate}=\text{ \$1.2 per pound} \end{gathered}$

The amount of pounds you can buy for $8.40 can be computed below

$\begin{gathered} \text{rate}=\frac{8.40}{\text{pounds}} \\ 1.2=\frac{8.40}{\text{pounds}} \\ weight\text{ in pounds = }\frac{8.40}{1.2} \\ \text{weight in pounds = 7 Ib} \end{gathered}$

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